Tachyons are hypothetical particles that have been theorized in physics, but their existence is not yet confirmed. According to current theoretical physics, if tachyons existed, they would always travel faster than the speed of light, making them challenging to describe within our current understanding of the universe.
Due to their hypothetical nature, it is difficult to make definitive statements about how a spinning tachyon would appear from our dimension. However, I can offer a speculative description based on some theoretical considerations.
If we assume that a tachyon could exist and spin within our three-dimensional space, it is believed that its behavior would violate the principles of causality and result in unusual effects. Tachyons are theorized to have imaginary mass, which means their mass is an imaginary quantity involving the square root of a negative number. This property leads to a range of strange consequences, such as tachyons appearing to gain energy as they decelerate and losing energy as they accelerate.
In terms of visual appearance, it is difficult to say precisely how a spinning tachyon would look since our understanding of their behavior is highly theoretical and speculative. One can speculate that it might exhibit unusual optical effects such as distortions or anomalies in light due to its superluminal nature. However, without a well-established theory describing tachyons and their interactions with our dimension, it remains largely a matter of speculation and imagination at this point.